Lubricator.



E. J. ABBOTT & W. B. HOPKINS.

LUBEIUATOR.

APPLIOATION FILED JAN.29,1912.

1,068,199. Patented July 22,1913.

EJJMOU ZlZBJfopifms meme/q UNTTFD STATES PATEN T OFFICE.

EDWARD J". ABBOTT AND WILLIS B. HOPKINS, F WILTON, NEW HAMPSHIRE.

LUBRICATOR.

Application filed January 29, 1912.

To all whom, it may concern:

Be it known that we Fowano Juries itccoin and illers lion'ron Hornnvs, citizens of the United States, residing at lVilton, in the county of Hillsboro and bl ta te of New Hampshire, have invented new and useful Improvements in Lubricators, of which the following is a specification.

The present invention relates to lubricators, and particularly to lubricators designed for use with open bearings.

It has for its object to provide a lubricating device which may be readily insert ed and removed from a hearing; which will effectually lubricate the bearing throughout its contact surface; which will receive and feed the lubricant i'iniformly through-- out its area; and which will maintain its proper form under all ordinary working conditions.

Briefly described the invention contemplates a lubricating pad formed of any suit able material, such as felt or like fibrous substance of suilicient body and texture to form a good lubricant carrying material, combined with a rigid and ;)e1.-:l.orated carrier plate to which the said fibrous pad is fitted and so secured that its form will be maintained under working conditions, and it may be conveniently handled for insertion or removal from a bearing.

In the accompanying drawings we have shown one embodiment of our invention, and that the best now known to us, although since this disclosure is merely illustrative and not restrictive of our invention, it will be understood that such variations from this disclosure as amount to mechanical skill. are within the purview of our present invention.

In said drawings, Figure 1. is a view in elevation of an open-roll bearing of conventional type having our lubricator mounted therein. Fig. 2 is also a view in elevation as seen from the left of l ig. 1. Fig. 3 is aperspective view of the lubricator moved from the bearing. Fig. l is a transverse sectional view of the lubricator.

Referring to the drawings by numerals, like numbers indicating like parts in the several views, 5 denotes a bearing standard of the open type in which is mounted, as shown in Fig. 1, the trunnion 6 of any roll.

The lubricator which is shown in detail in Figs. 2, 3 and l, comprises, as stated, a lubricant carrying pad 7 of any suitable Specification of Letters Patent.

Patented July 22, 1913. Serial No. 674,098.

material, as felt, the pad being of suiiicient body and proper texture to receive and re tain any suitable lubricant. In order that the pad may efficiently distribute the lubricant on the trunnion 6 of the roll, we preferably give it the curved form shown, so that the said pad 7 will lie at all times in contact with the surface of the trunnion 6 to be lubricated. To maintain the pad '7 in this form, we inclose it in a shell 8 of relatively thin metal but of suiiicient rigidity to maintain its shape under ordinary conditions. The edges of this shell are turned over preferably along the sides so as to compress and grip the pad 7 and hold the said pad and shell together. e find that by overturning the edges of the shell 8 a very convenient means of holding the pad and shell together is provided, although it will be obvious that other equivalent means for assembling the parts may be adopted. The shell 8 is provided with a plurality of perforations 9, and these may be conveniently secured by making the said shell 8 of a rectangular sheet of peii'it'orated material shaped to the desired form for holding the pad 7. The shell 8 formed as described will serve to keep the pad 7 in proper shape for trunnion lubrication, and when in place, as shown in Fig. 1, the lubricant may be readily supplied simply by pouring .it from the usual oiling can. upon the perforated plate 8 through the holes in which the lubricant seeps, and be taken up by the pad beneath. This construction gives a lubricating device which will distribute oil evenly on the trunnion; which will effectually cover and protect the trunnion from dirt or refuse which would otherwise fill the bearing which may be readily removed for repair or renewal of the fibrous element; and which will retain. its form under all working conditions; the danger of curling or distortion of the pad being eliminated by reason of the rigid shell or carrier plate which is combined with the lubri cant bearing pad.

Under certain condition of use, especially when applied to open bearings of the type shown in l ig. 1, some means must. be employed for holding the lubricating device in position on the roll trunnion (3, and thereby prevent it from :t'alling off or being thrown off by rotation of the trunnion. Various means may be brought into use for this purpose, one form of which is shown in the drawings, and comprises a curved plate 10 provided with lugs 11 at one end which are bent to lie on opposite sides of the bearing support A and prevent lateral movement of the plate. The opposite end of the plate 10 is forked, as at 1'2, and the prongs 12 of the forked end are'fcrmed with depressions or against the plate and a stop or head on the screw. This arrangement permits the upper forked end of the plate to rock on its lower end as a fulcrum which bears against the support A. The forked end of the plate 10 straddles a curved finger 17 provided with lateral projections 18 adapted to enter the seats 13 on the prongs 12. The lower end of the curved finger bears against the support A and its upper end on the plate 10 of the lubricating device, holding said plate in position on the trunnion by pressure of the spring 16, as shown in full lines in Fig. 1. The upper extremity of the curved finger is bent upwardly to form a hold so that when it is desired to remove the lubricating device the finger may be swung downwardly into the dotted line position represented in Fig. 1. The pressure of the curved finger 17 on the lubricating device is regulated by means of the screw or pin M, which on turning in one direction or the other compresses or releases the spring 16.

It is obvious, of course, that these devices may be made in standard sizes so that they may be kept in stock for particular types of machines, and furthermore, that the adaptation of the average size to bearings of vary ing lengths and widths is an easy matter, for they may be readily shortened and as readily compressed or spread to accommodate considerable divergence in length and width of the bearings withoutimpairing their structural efficiencies.

lVe are aware that it has been proposed to provide roll-top saddles with oil cups and drip openings, and we are also aware that it has been proposed to lubricate an open-top hearing by means of a grease bag, and we do not, therefore, extend our invention to include such devices, but so faraas we are aware we are the first to combine a lubricating pad of fibrous material with a perforated carrier plate or sheet which will admit of a uniform saturation of the lubricant carrier pad, and which may be readily adapted to bearings of this general open-top type.

e claim A lubricating element for an open jour nal bearing comprising a removable member made of a pad of absorbent material for holding the lubricant, and a supporting plate for said pad formed of metal relatively rigid with respect to the pad and perforated throughout its area for the passage therethrough of the lubricant to all parts of said pad when applied to the surface of said plate, said member being curved to fit the surface to be lubricated that the whole of the pad may bear on said surface, the edges of the supporting plate parallel to its axis of curvature being turned inwardly throughout their length to grip the corresponding edges of said pad and press the same firmly against the concave side of the supporting plate.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

EDlVARD J. ABBOTT. XVILLIS B. HOPKINS. lVitnesses N LLIE BALMFORTH, H. D. Crmnvnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C. 

